<!DOCTYPE html>
<html lang="en">
   <head>
      <meta charset="UTF-8">
      <title>join</title>
   </head>
   <body>
      <script>
         const spec ={size:'40cm*40cm',color:'white'}
         const pinjie = Object.values(spec).join('/')
         console.log(pinjie)
      </script>
   </body>
</html>